منابع مشابه
Local benchmarks for SKA HI 21-cm surveys
One of the obvious tasks for the Square Kilometer Array is to perform deep neutral hydrogen 21-cm emission line surveys out to large redshifts. For the planning of these surveys, and for the interpretation of the results, it is important to have solid z = 0 benchmarks. This paper summarizes some of the results of local extragalactic 21-cm surveys and their implications on the interpretation of ...
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One explanation for the disparity between Cold Dark Matter (CDM) predictions of galaxy numbers and observations could be that there are numerous dark galaxies in the Universe. These galaxies may still contain baryons, but no stars, and may be detectable in the 21cm line of atomic hydrogen. The results of surveys for such objects, and simulations that do/do not predict their existence, are contr...
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We study the detectability of the cross-correlation between 21 cm emission from the intergalactic medium and the galaxy distribution during (and before) reionization. We show that first-generation 21 cm experiments, such as the Mileura Widefield Array (MWA), can measure the cross-correlation to a precision of several percent on scales k ∼ 0.1 Mpc if combined with a deep galaxy survey detecting ...
متن کاملMapmaking for precision 21 cm cosmology
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. In order to study the " Cosmic Dawn " and the Epoch of Reionization with 21 cm tomography, we need to statistically...
متن کاملQuantum Money and Scalable 21-cm Cosmology
This thesis covers two unrelated topics. The first part of my thesis is about quantum money, a cryptographic protocol in which a mint can generate a quantum state that no one can copy. In public-key quantum money, anyone can verify that a given quantum state came from the mint, and in collision-free quantum money, even the mint cannot generate two valid quantum bills with the same serial number...
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ژورنال
عنوان ژورنال: Symposium - International Astronomical Union
سال: 1957
ISSN: 0074-1809
DOI: 10.1017/s0074180900048865